i had sex 5 weeks ago on june 18th and the condom broke but he said he didn't cum. i was suppose to get my period on the 7th of july but instead i just got brown discharge and usually when i get brown discharge it is because my period is coming but it never came. i am now a week late for my period, but its not regulated yet so sometimes it comes on different times of the months or sometimes it doesn't come at all. i only had 1 pregnancy test left so i took it and it came out negative. could i still be pregnant or is my period jacked up this month?